The SBC from 1955 had a great run and the LS motors still carry that torch.
You do realize, that outside of bore spacing and the GM casting marks, the LS family in reality has more in common with the Windsor 302 of "5.0 Mustang" fame in the 80s than Gen 1 SBCs, right? 4 head bolts per cylinder, non-siamesed intake and exhaust ports, racers found the Windsor 302 firing order and cam lobe order actually makes more power than original LS one, long-runner intakes, hyd roller cam, etc. LS just "out-Windsored" Ford and made a dang good engine family in the process. It's the engine Ford should have designed instead of the 4.6 Modular for the '96 Mustang. And I was a yuge Mustang fan back then!